使用Microsoft System.Speech.Recognition时出现PlatformNotSupportedException

Question

I have a one problem in my program. I Want to convert speech to text and I have a this code:

Choices sList = new Choices();
sList.Add(new string[] { "hello" });
Grammar gr = new Grammar(new GrammarBuilder(sList));
try {
    sRecognize.RequestRecognizerUpdate();
    sRecognize.LoadGrammar(gr);
    sRecognize.SpeechRecognized += sRecognize_SpeechRecognized;
    sRecognize.SetInputToDefaultAudioDevice();
    sRecognize.RecognizeAsync(RecognizeMode.Multiple);
    sRecognize.Recognize();
}
catch (Exception ex) {
    MessageBox.Show(ex.Message.ToString());
}

But when I using it, Visual Studio give an exception "platformnotsupportedexception" And say "The recognizer is not installed." I have a microphone, But I don't know why this don't job. Please Help Me.

Answer 1

platformnotsupportedexception The exception that is thrown when a feature does not run on a particular platform. This means that you probably didn't install Microsoft Speech Platform SDK 11 Requirements and Installation. Found here: http://msdn.microsoft.com/en-us/library/hh362873.aspx

Answer 2

Are you using System.Speech.Recognition or Microsoft.Speech.Recognition? They're different . If you're using Speech Platform Runtime/SDK 11, then you need to be using Microsoft.Speech.Recognition.

Also, you probably need to specify a cultureinfo when creating your recognizer .